✔️ ️AC VOLTAGE DETECTION: The Labgear voltage detector pen is a quick and simple method for non-contact detection of the presence of AC voltages from 90v to 600v with improved balance sensitivity for more accurate detection ✔️ ️SAFE AND RELIABLE: This easy to hold and ergonomic pen-style voltage finder signals the detection of voltage through the illumination of a glowing red led situated within the tip as well as a clear audible tone for a dual feedback response. ✔️ MULTI PURPOSE: Ideal for use in identifying the presence of AC voltage at socket outlets, switches, circuit breakers, fuses, luminaries, wires and cables. it can identify breaks in conductors by tracing along the cable from the source to the point where the indicator no longer illuminates; and also identify a blown fuse while in circuit. ✔️ BUILT IN LED TORCH: Complete with a handy built-in flashlight, the labgear voltage detector is perfect for illuminating dark work areas especially in harder to reach areas so you can see what you are doing without external light sources ✔️ A BRAND YOU CAN TRUST: Founded in 1932, Labgear are a proudly British company designing and manufacturing high quality products used by professionals. Labgear also has an enviable reputation for innovation, quality, reliability and excellent customer service.